SHT1X for esphome using https://github.com/practicalarduino/SHT1x

esphome.yaml

  includes:
    - ./sht1x/sht1x.h
    - ./sht1x/sht1x.cpp
    - ./sht1x/SHT1x.h
    - ./sht1x/SHT1x.cpp

sensor:
  - platform: custom
    lambda: |-
      auto my_sensor = new esphome::sht1x::SHT1XSensor(27, 14);
      App.register_component(my_sensor);
      return {my_sensor->temperature_sensor, my_sensor->humidity_sensor};
    sensors:
    - name: "SHT1X Temperature Sensor"
      unit_of_measurement: °C
      accuracy_decimals: 3
    - name: "SHT1X Humidity Sensor"
      unit_of_measurement: "%"
      accuracy_decimals: 3

sht1x.cpp

#include "sht1x.h"
#include "esphome/core/log.h"
namespace esphome {
namespace sht1x {

#define MIN_TEMP -40
#define MAX_TEMP 125

static const char *TAG = "sht1x.sensor";

void SHT1XSensor::setup() {
  ESP_LOGCONFIG(TAG, "Setting up SHT1X '%s'...", this->name_.c_str());
  ESP_LOGCONFIG(TAG, "Data pin is '%d'...", this->data->get_pin());
  ESP_LOGCONFIG(TAG, "Clock pin is '%d'...", this->clock->get_pin());
  this->sht1x_ = new SHT1x(this->data->get_pin(), this->clock->get_pin());
  ESP_LOGCONFIG(TAG, "Done setting up SHT1X '%s'...", this->name_.c_str());
}

void SHT1XSensor::update() {
  float temp = this->sht1x_->readTemperatureC();
  if (temp >= MIN_TEMP && temp <= MAX_TEMP) {
    this->temperature_sensor->publish_state(temp);
  }
  float humidity = this->sht1x_->readHumidity();
  if (humidity >= 0 && humidity <= 100) {
    this->humidity_sensor->publish_state(humidity);
  }
}
}  // namespace sht1x
}  // namespace esphome

sht1x.h

#pragma once

#include "esphome/core/component.h"
#include "esphome/components/sensor/sensor.h"
#include "SHT1x.h"

namespace esphome {
namespace sht1x {

/// This class implements support for 
class SHT1XSensor : public sensor::Sensor, public PollingComponent {
 public:
  SHT1XSensor() : PollingComponent(15000) { }
  SHT1XSensor(int data, int clock) : PollingComponent(15000) { 
    this->set_data(new GPIOPin(data, INPUT, false));
    this->set_clock(new GPIOPin(clock, INPUT, false));
}

  Sensor *temperature_sensor = new Sensor();
  Sensor *humidity_sensor = new Sensor();
  // ========== INTERNAL METHODS ==========
  // (In most use cases you won't need these)
  void setup() override;
  void update() override;
  void set_data(GPIOPin *pin) { data = pin; }
  void set_clock(GPIOPin *pin) { clock = pin; }

 protected:
  GPIOPin *data;
  GPIOPin *clock;

  SHT1x *sht1x_;
};

}  // namespace sht1x
}  // namespace esphome